It's a Stevens 520 with a Sears name.
Proofhouse.com has a store brand chart.
schematics for a stevens model 75 22 slide action
The Stevens Model 520 was built on a Browning patent and so marked. Stevens also built the gun for Sears before World War II under the 'Ranger' tradename, so if you have a slide-action shotgun marked 'Ranger' and 'Browning Patent' then that is what you have.
Yes this is a slide action .22
50-500 usd
AFAIK, there is no Winchester Model 90A. Is it a lever action, slide action, bot action, semi-auto or single shot? What caliber? What type and length of barrel?
The value of a Stevens model 77 slide action repeating shotgun depends on its condition. This gun in excellent condition is valued between 75.00 and 110.00 as of 2014.
$75-$150
1930 if you are referring to a Model 1890 slide action rifle.
Winchester model 25 solid frame shotgun
The stevens model 77 slide action shotgun was made from 1955-1971.
The savage model 29 slide action .22cal rifle was made from 1929-1967.